Engineering Research Equipment Grant: Excimer Pumped Dye Laser for Tomographic 3-D Imager

工程研究设备补助金：用于断层扫描 3D 成像仪的准分子泵浦染料激光器

• 批准号: 8705034
• 负责人: Lambertus Hesselink
• 金额: $ 9万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-09-01 至 1989-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8705034&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Grant; Excimer

This is a Research Equipment Grant for an excimer pumped dye laser tomographic 3-D imaging system capable of making time-resolved 3-D images of a fluid flow at a rate of 1000 frames per second. This equipment will continue the development of an imaging system for the examination of a coflowing gaseous jet using holographic interferometry. Image information is recorded on photographic film, representing the optical pathlength, which is related to the index of refraction of the medium. The tomographic imager coupled to an excimer pumped dye laser opens exciting new applications. By tuning the UV radiation to a resonance line of a species of interest, only that gas will be measured. Thus it should be possible to selectively measure such species as O2 or OH in a combusting flow. In addition, by making a measurement of absorption along the path length of the probe beams, the cumbersome process of fringe readout can be avoided. This equipment should prove very useful in fluid mechanics and combustion research.

这是一项研究设备拨款，用于准分子泵浦染料激光层析成像3-D成像系统，该系统能够以每秒1000帧的速率制作流体流动的时间分辨3-D图像。该设备将继续开发成像系统，用于使用全息干涉测量法检查共流气体射流。图像信息记录在照相胶片上，代表光路长度，光路长度与介质的折射率有关。层析成像仪耦合到准分子泵浦染料激光器打开了令人兴奋的新应用。通过将紫外线辐射调谐到感兴趣的物种的共振线，只有该气体将被测量。因此，有选择性地测量燃烧流中的O2或OH等物质应该是可能的。此外，通过沿着探测光束的路径长度测量吸收，可以避免繁琐的条纹读出过程。这种设备在流体力学和燃烧研究中应该是非常有用的。